Internal-combustion engine



March 10. 1925.

C. F. KETTERING INTERNAL COMBUSTION .ENGINE Original Filed April 1, 1918 Patented Mar. 10, 1925.

UNITED STATES PATENT orrljCE. 4

CRADLE F. KETTERING, OF DAYTON, OHIO, ASSIGNOR '10 DELCO-LIGHT OOMIANY,'

OF DAYTON, OHIO, A CORPORATION OF DELAWARE.

INTERNAL-CJMBUSTION ENGINE.

Original application fled April 1, 1918. Serial No. 225,902. Divided and this application filed March 6,

1920. Serial No. 363,889.

To all whom it may concern:

Be it known that I, CHARLES F. KETTER- 'ING, a citizen of the United States of America, residin at Dayton, county of Montgom- 5 ery, and tate of Ohio, have invented ceitain new and useful Improvements'inInternal-Combustion Engines, of which the following is a full, clear, and exact description;

This invention relates to power plants including an internal-combustion engine and has for its principal object the provision of improved means in construction of the plant, and more particularly in the construc- I 1 tion of the engine.

This invention is a division of the copending application, Serial Number 225,902, filed April 1st,'1918, now Patent No. 1,430,524, dated September 26, 1922.

1 The object of this invention is to provide a device for cooling the cylinder head while at the same time preheating the fuelmixture. 7

Other and further objects and advantages 2 from the following description, reference being had to the accompanying drawing, wherein a preferred embodiment of one form of the present invention is clearly shown. In the drawing: Fig. 1 is a fra entary sectionalview of then per part 0 an engine. I

Be erring to the drawing, 20 designates a cylinder, the lower portion being broken away, supporting a cylinder head 21 having an explosion chamber 22provided with an inlet passage 23 and an exhaust passage 2.4. These passages are separated from the explosion chamber 22 by a flatpartition or wall 25, which is apertured to provide parts between the chamber 22 and the passages 23 and 24. The flat partition or wall 25 serves as a seat for the intake valve '26 and exhaust valve 27, which are adapted to slide in the guides 28. These valves are actuated by rocker arms 29.

A bafiie member .30 extends across a portion of the passage 23 and deflects the incoming fuel, causing the fuel to move upwardly, as indicated by arrow 32, and strike against a partition or common wall 31 which separates the exhaust passage 24 and inlet passage 23. The partition or wall 31 being of the present invention will be apparent.

.mon wall to thereby much hotter than the incoming fuel, heat absorbed by the fuel fromfthe partition or wall 31, thereby vaporizing the same just before its admission into the explosion chamber;

By vaporizing {the fuel at a point close to the combustionchamber, there is no opportuni-tvfor the fuel to condense before reachingt e combustion chamber. 1

It is apparent from the foregoing that the present invention provides for cooling the exhaust passage as well as for heating the fuel mixture. In this manner the cylinder head is prevented from becoming overheated at a point Where the dissipation of heat b radiation and conduction is somewhat di ficult.

While the form of mechanism herein shown and described constitutes? a preferred embodiment of one form of the invention, it is to be understood that other forms might be adopted and various changes and altera tions made in the shape, size, and propor tion of the elements therein without departing from the spirit: and scope of the invention. I

What I claim is as follows:

1. In a device of the class described, and in combination, an engine cylinder provided with a cylinder head, and with intake and exhaust passages within said, head and communicating with said cylinder through separate ports; valves for said ports; a common wall located within said cylinder head and separating the intake and exhaust passages from one another and which wall is adapted to be heated by the exhaustgases passing through the exhaust passage; said intake passage being tortuous adjacent said comdirect inflowing fuel. against said common wall. 1

2. In a device of the class described, and in combination, an engine cylinder provided with a cylinder head, and with intake and exhaust passages within said head and communicating with said cylinder through separate ports; valves for said ports; a common wall located within said cylinder head and separating the intake and exhaust passages" from one another'and which wall is adapted to be heated by the exhaust gases passing 105 throu h the exhaust passage; and a baflie arrange in and extending in a direction substantially transverse to the flow "of'inflowing fuel in said intake assages, and which baffie seryes to deflect t e infiowing fuel against said common wall. a

3. Ina device of the class described, and in combination, an engine cylinder provided with a cylinder head, and with intake arid exhaust passages within said head and communicating with said cylinder through separate ports; valves for said ports; a common wall located Within said cylinder head and separating the intake and exhaust passages from one another and whichwall is adapted to be heated by the exhaust gases passing through the exhaust passage; and a baffle located within said intake passage and which baflle is inclined relative to the direction of flow of fuel therein, to thereby (1eflecltl the 'inflowing fuel against said common wa i a In testimony whereof I aflix my si nature.

. CHARLES F. KETTER NG. \Vi'tnesses i MILDR D Pmvn,

HELEN LAYTON. 

